In our solar system, Jupiter is the biggest planet at 88,846 miles in equatorial diameter — the distance through the planet from one side to the other at its equator — and a mass of 1,898 × 10^24 kg.

WASHINGTON (Reuters) - Jupiter, the solar system's largest planet, may have been smacked head-on by an embryonic planet 10 times Earth's mass not long after being formed, a monumental crash with ...

Astronomers in Poland have discovered a nearby exoplanet more than 11 times the mass of Jupiter, comfortably putting it in the pantheon of the most massive known worlds. The object is a cold ...

Study examines 3I/ATLAS’s closest approach to Jupiter on March 16, 2026, showing its distance aligns with Jupiter’s Hill ...

An illustration of the hot Jupiter HD 189733 b don't be fooled by its placid marble like appearance . | Credit: NASA/ Robert Lea (Created with Canva) Using the James Webb Space Telescope (JWST), ...

Gravitational microlensing is the only method capable of exploring the entire population of free-floating planets down to Mars-mass objects, because the microlensing signal does not depend on the ...

CINCINNATI (WKRC) - Astronomers discovered a free-floating rogue planet with a mass 10 times heavier than Jupiter, and it's growing at an unprecedented rate. The rogue planet, named as such because it ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Think our solar system is "normal?" Think again. The most ...